20577740

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{167}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 44622144

約数和(自身を除く): 24044404

約数列:

[1, 2, 4, 5, 10, 20, 61, 101, 122, 167, 202, 244, 305, 334, 404, 505, 610, 668, 835, 1010, 1220, 1670, 2020, 3340, 6161, 10187, 12322, 16867, 20374, 24644, 30805, 33734, 40748, 50935, 61610, 67468, 84335, 101870, 123220, 168670, 203740, 337340, 1028887, 2057774, 4115548, 5144435, 10288870, 20577740]

約数ペア:

[(1, 20577740), (2, 10288870), (4, 5144435), (5, 4115548), (10, 2057774), (20, 1028887), (61, 337340), (101, 203740), (122, 168670), (167, 123220), (202, 101870), (244, 84335), (305, 67468), (334, 61610), (404, 50935), (505, 40748), (610, 33734), (668, 30805), (835, 24644), (1010, 20374), (1220, 16867), (1670, 12322), (2020, 10187), (3340, 6161)]